/*
 * Copyright 2011-2025 GatlingCorp (https://gatling.io)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.gatling.app

import io.gatling.commons.util.StringHelper._
import io.gatling.core.cli.GatlingArgs

final class Selection(val simulationClass: SimulationClass, val simulationId: String, val description: String)

object Selection {

  def apply(gatlingArgs: GatlingArgs): Selection =
    gatlingArgs.simulationClass match {
      case Some(simulationClassName) =>
        val simulationClass = SimulationClass
          .fromClass(getClass.getClassLoader.loadClass(simulationClassName))
          .getOrElse(throw new IllegalArgumentException(s"Simulation class $simulationClassName is not a Simulation"))
        new Selection(simulationClass, simulationClass.simpleName.clean, gatlingArgs.runDescription.getOrElse(""))

      case _ =>
        throw new IllegalArgumentException("Missing simulation class")
    }
}
